With reference to the forensic audit report on irregularities at PetroSA by a certain company (name furnished), (a) what process was followed regarding the appointment of the auditors, (b) why was the office of the Auditor-General not requested to conduct the forensic audit, (c) what terms of reference were given to the company, (d) what were the costs associated with the forensic audit of PetroSA and (e) what were the findings of the forensic auditing company?